Introduction

raws

Products Description

### **Part 1 Classification System**

Stanozolol raw material powder is usually divided into three categories according to its use and purity:

1. **Pharmaceutical grade powder**: The purity is usually ≥99%, which meets the pharmacopoeia standards and is widely used in the production of oral tablets and injection suspensions for human use. It requires strict control of impurities, residual solvents and heavy metals.

2. **Scientific research grade powder**: The purity is generally 95%\~99%, which is used for pharmacological research, pharmacodynamics and toxicology testing. It is suitable for universities, research institutes and development laboratories. Although it has no clinical application, it still needs to meet basic safety indicators.

3. **Veterinary grade powder**: The purity is around 90%\~95%, which is mainly used for veterinary preparations, especially in the horse racing or racing dog industry, to help animals improve their physical fitness and recovery speed. The impurity control standards are relatively loose.

---

### **Part 2 Physical and Chemical Properties**

* **Chemical Name**: 17β-Hydroxy-17-methyl-5α-androstano\[3,2-c]pyrazol

* **Molecular Formula**: C21H32N2O

* **Molecular Weight**: 328.49 g/mol

* **CAS Number**: **10418-03-8**

* **Melting Point**: Approximately 172°C \~ 180°C

* **Solubility**: Almost insoluble in water, but soluble in organic solvents such as ethanol, acetone, and chloroform; difficult to dissolve in oil media, so injections are mostly in the form of suspensions.

* **pKa**: Approximately 11.4 (due to the influence of the pyrazole ring in the molecule on alkalinity)

* **Structural Features**: Stanozolol is a DHT (dihydrotestosterone) derivative. By introducing a pyrazole ring into the A ring, aromatization is inhibited to ensure stable efficacy and no estrogen side effects.

---

### **Part 3 Appearance and Color**

Stanozolol raw material powder is usually fine white or slightly white crystalline powder with dry and uniform texture. High-purity products are pure in color, slightly greasy to the touch, and should not have obvious impurities or particles. If the color is yellowish or grayish white, it usually means that the product is stored in poor conditions or there is oxidation or impurities in the production process.

---

### **Part 4 Advantages and Pharmacological Characteristics**

1. **Highly effective anabolic effect**: Stanozolol can significantly improve nitrogen balance, promote protein synthesis, and help muscle growth and recovery.

2. **Low androgenic side effects**: Compared with other androgens, Stanozolol has weaker androgenic activity, reducing side effects caused by androgens.

3. **No aromatization effect**: Due to its structural peculiarity, Stanozolol will not be converted into estrogen, avoiding water retention and the risk of male breast development.

4. **Improving hemoglobin production**: increasing the number of red blood cells, improving blood oxygen carrying capacity, and enhancing exercise endurance and recovery.

5. **Optimizing fat distribution**: can help maintain muscle density during fat loss, and enhance muscle hardness and line sense.

---

### **Section 5 Production process description**

The synthesis of Stanozolol starts with DHT or related steroid nuclei, and achieves structural modification through acylation, amination and pyrazole ring construction. After the synthesis is completed, it needs to be crystallized, purified, dried and tested for impurities to ensure purity and stability. The final product should meet international pharmacopoeia standards, such as USP or EP specifications.

---

### **Section 6 Application areas**

1. **Medical use**: used to treat hereditary angioedema, chronic wasting disease, anemia, and postoperative recovery.

2. **Bodybuilding and competitive sports**: widely used in fat loss and pre-competition adjustment stages to enhance muscle hardness, reduce water content, and shape an ideal body shape.

3. **Veterinary field**: used for improving endurance and speed of racehorses and dogs, but some countries have strictly restricted such use.

---

### **Section 7 Storage conditions and stability**

Stanozolol powder should be stored in a dry, cool environment, away from light, and sealed. The ideal temperature is between 2℃ and 8℃. Avoid moisture or high temperature environment to cause decomposition or discoloration. The powder should be kept away from strong oxidants and avoid violent vibration or moisture during transportation.

---

### **Section 8 Safety and regulations**

Stanozolol is a controlled drug and its use must comply with relevant laws and regulations of various countries. Unauthorized use or sale may violate anti-doping regulations and laws. Long-term high-dose abuse may lead to hepatotoxicity, dyslipidemia and endocrine disorders, so caution must be exercised in medicine or scientific research.

---

### **Section 9 Summary**

Stanozolol (Winstrol) raw material powder has become the focus of attention in the fields of medicine, sports and scientific research due to its unique chemical structure and significant pharmacological effects. The quality of high-purity powder directly affects the safety and stability of the preparation, so production, testing and storage must strictly follow standards. From medical use to bodybuilding applications, Stanozolol brings ideal effects but also potential risks. Only scientific and reasonable use can maximize its value.